Chimney-cap.



E. J. GOGHRAN.

CHIMNEY (JAB. APPLICATION FILED 00T.6, 1910.

*-Paten ted Nov. 29, 1910 .l'lllll v III EDWIN JAMES COCHRAN, 0FSTERLING, ILLINOIS.

CHIMNEY-CAP.

T 0 all whom it may concern:

Be it known that I, EDWIN J. COCHRAN, a citizen of the United States ofAmerica, and a resident of Sterling, in the county of VVhiteside andState of Illinois, have invented certain new and useful Improvements in'Chimney-Caps, of which the following is specification.

This invention relates to that class of chimney caps in which therevoluble cowl or shield is mounted on a vertically arranged standardcarried by the fixed supporting member of the cap, and has for itsobjects to provide a simple and substantial structural formation andarrangement of parts of the fixed supporting member adapting the samefor ready adjustment to fit varying diameters of the discharge pipes orcollars of chimneys or the like. Also to provide a simple and efiicientstructural formation and combination of parts comprising the journalconnection between the revoluble and fixed members of the chimney cap,whereby a free turning movement of the rev oluble member is attainedduring long continued use without liability to clogging and stonnage byaccumulations of soot, and which at the same time afiords a strong andsubstantial connection of the parts, all as will hereinafter more fullyappear.

In the accompanying drawings: Figure 1, is a fragmentary verticalsectional elevation on line a2w, Fig. 2 of a chimney cap embodying thepresent invention. Fig. 2, is a horizontal sectional elevation on linew00, Fig. 1. Fig. 3, is a detail top view of the revoluble spider whichcarries the cowl shield member.

Similar reference numerals indicate like parts in the several views.

Referring to the drawings, 1 represents the upper end of the outlet pipeorcollar at the end of a smoke chimney or the like, and 2 the revolubleplate metal cowl or shield, pivoted in superimposed relation above theoutlet opening of said pipe or collar and adapted to prevent drafts ofair blowing down the chimney and at the same time aid in producing anupward draft in the same.

3 is a central spider having a central vertically orificed hub 4 and aplurality of radial arms 5, which arms in turn are formed with a seriesof notches or recesses 6, preferably in the top face of the arms, asshown.

Specification of Letters Patent.

Application filed Gctober 6, 1910.

Patented Nov. $9, 1910.

Serial No. 585,690.

7 are bracket bars corresponding in numher to the radial arms 5aforesaid and individual thereto. Said bracket bars are provided attheir outer ends with angularly arranged ears 8 for permanent attachmentto the upper end of the outlet pipe or collar 1, by means of attachingbolts 9 as shown, or by other equivalent fastening means. At their innerends said bracket bars are provided with lateral lugs 10 adapted forengagement in the aforesaid recesses 6 of the spider arms to preventindependent movement between the parts after the same have been properlyassembled.

11 are transverse bolts passing through orifices formed therefor in thespider arms 5 and bracket bars 7 and adapted to secure said partstogether in assembled relation. W ith a view to permit the beforedescribed adjustment between the parts, the orifices 12 in one or theother of said arms or bars will preferably be of an elongated form, asillustrated in Fig. 1.

18 is a vertically arranged standard, preferably of the ribbed formshown, and having at its lower end a tapering shank 1% which fits thebore of the spider hub a, and is secured in place therein, by a nut andwasher fitting a screw-threaded stem at the lower end of said shank.Midway its height said standard is provided with an annular collar 15for the purpose hereinafter stated, and at its upper end with a circularbearing stem 16 for bearing engagement in the socket of the revolublespider hereinafter described.

17 is the revoluble spider, above referred to, the main portion of whichis arranged vertically'at the side of the aforesaid standard 13, andprovided at its lower end with a laterally extending horizontal collar18, adapted to encircle the lower portion of the standard 13, and havebearing upon' the same. At its upper end said main portion of the spideris provided with an enlarged head 19, which extends laterally and isformed with an open bottom recess for the reception of the circularbearing stem 16 of the standard 13 to provide a bearing therefor. Thebearing itself may be of any or dinary form such as one or moreinterposed balls, or a cone formation of the upper end of the stem 16and a corresponding formation of the recess in the aforesaid enlargedhead 19.

20 is an angularly arranged extension formed on the upper end of thehead 19 aforesaid, and provided with a transverse recess for thereception of the attachin. cross-bar of the revolving cowl or shiel nowto be described.

21 is a ductile-metal bar fitting the transverse recess of the aforesaidextension 20 and secured therein by a fastening bolt 22.

Said bar is of the elongated form shown in Fig. 3, and is provided witha series of rivet holes 28, by which it is secured by rivets to theinner surface of the cowl or shield-2. With the described constructionthe ductile nature of the bar 21 permits of 5 its being readily bent tofit the interior sur face of the cowl to attain a substantial attachmentof the parts in the assembling operation.

24 is a split pin or bolt passing transversely through the main portionof the spider 17 and adapted to project at -a point immediately beneaththe annular collar 15, before described to prevent any upwarddisplacement of the cowl or shield 2, from its supporting standard 13,while permitting a free rotation of the same.

Having thus fully described my said invention what I claim as new anddesire to secure by Letters Patent, is

.1. In a chimney cap, the combination of a revoluble cowl, a fixedsupport for the same comprising a spider formed with a central hub and aplurality of radial arms, a series of bracket bars secured to said armsin a radially adjustable manner, and means for interlocking said barsand arms at their adjustments, substantially as set forth.

2.7In a chimney cap, the combination of a revoluble cowl, a fixedsupport for the same comprising a spider formed with a central hub and aplurality of radial arms, a series of bracket bars secured to said armsin a radially adjustable manner, and means for interlocking said barsand arms at their adjustments, the same comprising a series of notchesin one of said parts and lateral lugs on the other parts for engagementin said notches, substantially as set forth.

3. In a chimney cap, the combination of a K spider having radial armsadapted for engagement with a smoke pipe or collar and formed with avertical orifice in its hub portion, a vertical standard carried by saidhub and formed with a collar intermediate of its height and with acentral hearing stem at top and a revoluble spider comprising a mainvertical portion provided at its lower end with a lateral collarencompassing the aforesaid standard, at its intermediate height withmeans for engaging beneath the aforesaid collar, and at its upper endwith an enlarged head having an open bottom recess for engagement withthe bearing stem aforesaid, the said head having an angular extensionformed with a transverse recess for the reception of the ductile barsaforesaid, substantially as set forth.

4:- In a chimney cap, the combination of a revoluble cowl, a transverseductile bar having permanent attachment thereto, a fixed spider havingradial arms adapted for engagement with a smoke pipe or collar andformed with a vertical orifice in its hub portion, a vertical standardcarried by said having an angular extension formed with a transverserecess for the reception of the ductile bar aforesaid, substantially asset forth.

Signed at Sterling, Illinois, this 3rd day of October, 1910.

EDWIN JAMES COCHRAN.

Witnesses FRED. A. Soi-mroncnn,

W. A. JENKINS.

